Stock material or miscellaneous articles – Magnetic recording component or stock – Magnetic head
Reexamination Certificate
2009-07-28
2011-12-13
Bernatz, Kevin (Department: 1785)
Stock material or miscellaneous articles
Magnetic recording component or stock
Magnetic head
C428S826000, C428S692100, C360S324000
Reexamination Certificate
active
08076012
ABSTRACT:
Disclosed are a magnetic thin film capable of providing a high uniaxial magnetic anisotropy, Ku, while suppressing the saturation magnetization Ms thereof, and a method for forming the film; and also disclosed are various devices to which the magnetic thin film is applied. The magnetic thin film comprises a Co-M-Pt alloy having an L11-type ordered structure (wherein M represents one or more metal elements except Co and Pt). For example, the Co-M-Pt alloy is a Co—Ni—Pt alloy of which the composition comprises from 10 to 35 at. % of Co, from 20 to 55 at. % of Ni and a balance of Pt. The magnetic thin film is applicable to perpendicular magnetic recording media, tunnel magneto-resistance (TMR) devices, magnetoresistive random access memories (MRAM), microelectromechanical system (MEMS) devices, etc.
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Aoi Hajime
Kataoka Hiroyasu
Kitakami Osamu
Okamoto Satoshi
Sato Hideo
Bernatz Kevin
Fuji Electric & Co., Ltd.
Rossi Kimms & McDowell LLP
Tohoku University
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